Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec6978c14903c40…

MALICIOUS

PDF

86.9 KB Created: 2021-07-08 11:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d47c155c95a9401a40552062c274c7d3 SHA-1: 31e78149533b9ff0db17d477514753a9fc1355b7 SHA-256: cec6978c14903c402ec7a176f0bfa8f8a676ba2739529055e9e8589d6f9b9522
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous links pointing to compromised websites, indicating it's designed to exploit vulnerabilities or redirect users to malicious content. The 'SE_PAYMENT_REDIRECT_LURE' heuristic strongly suggests a phishing attempt related to financial transactions. The ML classifier and ClamAV detection further confirm its malicious nature, likely serving as a downloader or part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.ecostroyservis.ru/File/65471946075.pdf
    • http://landmanenterprises.com/clients/6/66/660ad4be7ac834282af30b44844c6003/File/43146005927.pdf
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16084b2a44fea3---63541095513.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092802230487---bovex.pdf
    • http://bahattinburyan.com/userfiles/file/tenogeker.pdf
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/77956a15ad80a4d1bb347d0b07d6f48d/pipikaziso.pdf
    • http://ebslang.net/_UploadFile/Images/file/71110568177.pdf
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e4bd6a1fa---dobijivegitedoxen.pdf
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077041fa05cd---poxopadi.pdf
    • http://box8websites.com/ckfinder/userfiles/files/rumelosaliripoxesola.pdf
    • https://stef-nancy.fr/upload/document/vakudirazosawagodusir.pdf
    • http://originalcheck.it/public/img_admin/file///xipapil.pdf
    • http://sincaremedicaltour.com/js/upload/22507289464.pdf
    • http://przychodnia-felinskiego.pl/uploads/editor/file/bobigujaragokod.pdf
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e751e80dc6---47928764050.pdf
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb3817489b---75551969228.pdf
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d0cd71c5c3c---rimejususame.pdf
    • http://kagoshimakojintaxi.com/userfiles/file/midixoz.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607efd1977faa---musaxutiwijulepura.pdf
    • http://applexin.com/ttpsea/files/file/xojunogamazugipoma.pdf
    • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/6515682863.pdf
    • http://abimobiliare.pl/pliki/File/76992568973.pdf
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/ue9t3pv82opvi8954fl92n66i0/75922426440.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=banking+schemes+in+india+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f211.bin
c9c169d907599952ff867077e7b919fde9eb3fdf2c6dd63135ee0ae92a9aef06
pdf-font-stream PDF embedded font (sfnt) at offset 0xF211 10848 bytes
font_01_sfnt_off00010ab1.bin
d022e2e441cb6e0bb47d3e0287fcecdcb63f5ade525dcbfa83494bc8b0a03ea1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB1 16772 bytes
font_02_sfnt_off0001364f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1364F 16792 bytes